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Orange-clad partygoers dance to the music in their boats on Amstel river in the village of Nes aan de Amstel, on their way back from Amsterdam, Monday April 30, 2012. The Dutch celebrate Queen's Day, a Dutch national holiday marking the birthday of the Queen's mother. (AP Photo/Peter Dejong)

Queen's Day in Netherlands

May 1, 2012

A large chunk of the Dutch population was clad in orange April 30 for Queen's Day, the Dutch national holiday, which honors the ruling House of Orange. There were parties around the country, with the ruling Queen Beatrix attending celebrations in the cities of Rhenen and Veenendaal.